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TIDAL TESTING FACILITIES


RIA D’ETEL, A SHELTERED AND POWERFUL TIDAL TEST SITE


Guinard Energies, a Brest-based French start-up, will install its first industrial demonstrator at Etel River estuary (South Brittany) in early 2018


This 4m diameter ducted tidal turbine, named P400, is able to produce 250kW (@3.5 m/s), two times more than a same diameter non-ducted turbine.


CURRENT BOOSTER TECHNOLOGY The company developed a ducted tidal turbine technology, named MegaWattBlue®


, in partnership


with the DGA (French Defense Procurement Agency). This duct accelerates the current speed, thus allowing the recovery of twice as much energy. It has already been validated on 4kW turbine both in basin test and marine environments.


The MWB® technology and conversion


chain is now ready for its first industrial demonstration.


A SUITABLE TEST SITE The P400 will be installed in a sheltered site which benefits from


one of the most powerful currents in Brittany, with up to 3.6m/s at spring tide (about 7 knots) with a water depth between 12 and 18m. Chantier Bretagne Sud shipyard, which managed the duct construction, is situated at only 150m from the test site and hosts the electrical power conversion and dissipation shelter. The site’s potential has been assessed by Brittany experts including IFREMER and TBM.


INNOVATIVE FOUNDATION Focusing on reducing installation and maintenance costs, Guinard Energies have developed a self-buoyant gravity base. This structure is towed in flotation from shipyard to installation site and electrical connection is done afloat, in dry conditions. This innovative foundation is ballasted by following a specific procedure in order to ensure the stability during all installation phases. The overall


operation can be done in less than one hour, thus allowing operation during short slack tide time. Thanks to two integrated air pressurised tanks, this operation is reversible. Maintenance and structure inspection can be done afloat.


With this patented foundation, Guinard Energies aims to avoid expensive marine operation and drastically reduce installation and maintenance costs.


PUBLISH LAUNCH


Launching of the self-floating/ ballasting base will be public. As the site is located in an estuary, all local representatives, authorities, journalists and individuals will be welcome.


Guinard Energies


12


www.wavetidalenergynetwork.co.uk


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